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LOINC 2.76 2023-09-18 Language:

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LOINC Long Common Name Component Property Timing System Scale Method
50984-4 Horowitz index in Arterial blood Horowitz index Ratio Pt BldA+Inhl gas Qn

Details
Component
Horowitz index Property
Ratio
Timing
Pt System
BldA+Inhl gas
Scale
Qn Class
CHEM
Version Last Changed
2.73 Change Type
MIN
Definition Description
A ratio with numerator = arterial oxygen partial pressure (PaO2) in mmHg and denominator = fraction of inspired oxygen (FIO2) with no units. If the patient is breathing room air (21% O2) the fraction would be 0.21. It is reported in mmHg. It is a well established marker for lung function during mechanical ventilation and used in many acuity scores like SAPS II, SAPS III, and SOFA. Status
ACTIVE
Class Type
1 Formula
arterial oxygen partial pressure [(PaO2) in mmHg]/ fraction of inspired oxygen
Units Required
N Related Names
ABG; ART; Art bld; Art blood; Arterial; Arterial blood; BldA+IhG; Blood arterial; Chemistry; Gases; IhG; Inhaled Gas; Inspired; PaO2/FiO2; Point in time; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto
Short Name
Horowitz index BldA+IhG-Rto Order/Observation
Both
Example Units
mm Hg Long Common Name
Horowitz index in Arterial blood
Example UCUM Units
mm[Hg] Change Reason Public
Release 2.70: DefinitionDescription: Updated for accuracy;
Common Test Rank
1912 Common Order Rank
0
Common SI Test Rank
0 Version First Released
2.22
DisplayName
Horowitz index (BldA+Inhl gas) [Ratio]